When A- then the number of elements in PA is

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Atomic Number

When A=ϕ, the...

Question

When A = ϕ, then the number of elements in P(A) is ____________.

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A = ϕ

P (A)

P (A)

A = ϕ

^{'} A^{'}

^{'} n^{'} .

^{'} C^{'}

C = {(x, y) | x, y \in P (A) and x \cap y = ϕ},

P (A)

^{'} A^{'},

^{'} C^{'}

A = {{2}, {ϕ}, ϕ}

P (A)

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